A3 Tools Steel
A3 steel is a low-carbon structural steel grade that is currently in use. It corresponds to Q235 steel in the current national standard (“Q” stands for yield strength, and “235” indicates a yield strength of 235 MPa). It belongs to the category of ordinary carbon structural steel and is one of the most widely used basic steels in industrial and civilian fields.
A3 Tool Steel Properties
Key Features of A3 Tool Steel
A3 tool steel possesses several key properties that make it suitable for cold working applications:
Excellent Wear Resistance: A3 tool steel is extremely wear-resistant, making it ideal for tools subject to friction and stress, such as punches and dies. Our enhanced alloying process further optimizes its wear resistance, making it a top choice for heavy-duty applications.
High Toughness: It can withstand high impact forces without cracking, which is critical for tools and dies used in heavy-duty applications. At SteelPRO Group, we incorporate advanced heat treatment technologies to maximize this toughness.
Excellent Machinability: Despite its high hardness, A3 tool steel is easy to machine, enabling manufacturers to create precision tools while minimizing equipment wear. Our team ensures that the machinability of each product is optimized, resulting in greater efficiency and precision on every project.
Medium Hardness: After heat treatment, this steel can reach an oil-hardened hardness of 28-34 HRc, ensuring a sharp cutting edge during operation.
Air Hardening: A3 tool steel is air hardening, which means it does not need to be quenched in a liquid bath, making it easier to handle during the heat treatment process.
What parts of the crusher machine are used?
- Crusher Frame and Frame Structure
The frame is the foundational load-bearing component of the crusher, supporting heavy components such as the rotor, crushing chamber, and motor. It primarily withstands static loads and the steady pressure of the equipment during operation, rather than direct impact from the material.
A3 steel is strong enough to meet the frame’s load-bearing requirements and offers excellent weldability, making it easy to fabricate into large box or frame structures. Its cost is significantly lower than that of high-strength alloy steels, making it a popular choice for small and medium-sized crusher frames.
- Material Handling Components such as the Feed Hopper and Chute
The feed hopper receives the material to be crushed and directs it into the crushing chamber, while the chute guides the material flow. These components typically only come into contact with the material at low speeds, resulting in minimal wear (especially when handling bulky, low-hardness materials).
A3 steel is easily stamped and bent, allowing it to be formed into various shapes for feed hoppers and chutes to meet material handling and guidance requirements. For materials prone to abrasion, a simple wear-resistant overlay can be applied to the inner surface to further extend its service life.
- Protective Components, Such as Guards and Safety Fences
Crushers involve rotating components (such as pulleys and rotors) and the risk of splashing during operation. Protective structures such as guards and safety fences are necessary to ensure operator safety.
These components have relatively low mechanical property requirements, primarily requiring a certain level of structural strength and deformation resistance. A3 steel is easy to process and can be quickly cut and welded into various protective housings, offering low cost and sufficient safety protection.
- Connecting and Supporting Components, Such as Motor Bases and Bearing Housings
The motor base secures the motor, while the bearing housing supports rotating components such as the rotor shaft. Their primary function is to stabilize the connection between equipment components and transmit loads without direct contact with the material.
The rigidity and machining precision of A3 steel meet the installation requirements of the base and bearing housing, and it is easily secured to other components by bolting or welding, making installation and maintenance simple.
- Non-Load-Bearing Casings and Covers
Components such as the crusher’s side covers, inspection doors, and top cover primarily seal the machine interior, prevent dust leakage, and facilitate maintenance. They are not directly involved in the crushing process and do not bear significant loads.
A3 steel can be cut and bent into thin yet structurally stable covers, meeting sealing requirements while reducing overall equipment weight and cost.
